Top 7 21.5×23.5×1 Air Filter – Furnace Filters

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1. Aerostar

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Aerostar 21 1/2x23 1/2x1 MERV 13 Pleated Air Filter, 6 Pack Actual Size: 21 1/2" x 23 1/2" x 3/4", AC Furnace Air Filter

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Aerostar #ad - For best results, change your filters every 60 to 90 days but increase frequency to 30 days during peak summer and winter months. Manufactured in the usa by filtration Group, a world-leading manufacturer and supplier of filtration solutions making the world safer, healthier & more productive.

100% synthetic electrostatic media for high efficiency with low air flow resistance. Comparable to mpr 600 clean living and Honeywell Micro Defense Plus FPR 5. Designed to filter microscopic particles such as lint, pet dander, dust mites, fine dust, spores, pollen, smoke, and bacteria. Simple to install and a cost-effective step towards a healthier home environment. Nominal size: 21 1/2 x 23 1/2 x 1; actual size: 21 1/2"x23 1/2"x3/4".
BrandAerostar #ad
ManufacturerFiltration Group #ad
Part Number21 1/2x23 1/2x1 MERV 13

2. Purafilter

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Purafilter Gold 21.5x23.25x1 Actual Size MERV 11 1-Inch Filter 4 Pack

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Purafilter #ad - Each filter lasts up to 90 days. Merv 11 rated. Pack of 4 Filters. Traps micro-particles associated with allergies like ragweed and pollen. Nominal size 21. 5x23. 25x1. Actual size 21. 5 x 23. 25 x 1. High-efficiency air filter.
BrandPurafilter #ad
ManufacturerDupont #ad
Height1 Inches
Length21.5 Inches
Weight0.75 Pounds
Width23.25 Inches
Part NumberKG21.5X23.25X1A
ModelKG21.5X23.25X1A

3. Accumulair

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Accumulair Platinum 21.5x23.25x1 Actual Size MERV 11 Air Filter/Furnace Filters 6 pack

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Accumulair #ad - Captures up to 94% or more of airborne contaminants such as dust, cement dust, lead dust, lint, pet dander, dust mite debris, standing dust, small fibers, and other airborne contaminants. Enhance air quality for up to 3 months. Typically ideal for homes with pets, superior residential buildings, superior commercial buildings, restaurants, and workplaces. Tribo-electric synthetic media provides high filtration efficiency, low air resistance, and is hydrophobic does not absorb moisture. 21. 5x23. 25x1 actual size merv 11 - tested and rated according to ASHRAE Standard 52. 2.
BrandAccumulair #ad
ManufacturerAccumulair® #ad
Height0.75 Inches
Length21.5 Inches
Weight1.25 Pounds
Width23.25 Inches
Part Number886566136632
Model886566136632

4. Filtrete

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Micro Allergen Defense, AC Furnace Air Filter, 6-Pack exact dimensions 23.188 x 23.188 x 0.81, Filtrete 23.5x23.5x1, MPR 1000

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Filtrete #ad - Filtrete allergen defense air filters turn your central heating and cooling system into a whole house air cleaner. Lasts up to 3 months. Microparticle Performance Rating 1000 Designed with filtrete brand 3-in-1 technology from 3M to pull in and trap unwanted air particles while letting clean air flow through. Outperforms fiberglass, washable and non-electrostatic pleated 1" filters. Developed to pull in and trap unwanted particles, mold spores and pollen, pet dander, including: lint, dust and dust mite debris, and smoke and smog.
BrandFiltrete #ad
ManufacturerFiltrete #ad
Height23.19 Inches
Length23.19 Inches
Width0.81 Inches
Part NumberAD40-6PK-2E
ModelAD40-6PK-1E

5. AIRX FILTERS WICKED CLEAN AIR.

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Allergy 2-Pack Made in the USA, AIRx Filters 21.5x23.5x1 Air Filter MERV 11 Pleated HVAC AC Furnace Air Filter

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AIRX FILTERS WICKED CLEAN AIR. #ad - Multi-pack oem air filter replacement compatible: purchasing an AIRx Filers is easy, AIRx Filters offers various sizes that would fit your AC and/or Furnace air filter need and different multi-pack to fit every budget.

Contaminant reducing replacement air filter: airx filters 21. 5x23. 5x1 air filter replacement Actual: 21. 50 x 23. 50 x 087in traps 1. 0 - 100 micron of particles such as lint, pollen, dust, mold spores, dust mite debris, pet dander, smoke, and smog. Merv rated replacement air filter: airx filters 21. 5x23. 5x1 actual: 21. 50 x 23. 50 x 087in merv merv 11 air filter assures the effectiveness of your home HVAC system resulting to efficient heating, ventilation and air conditioning. High quality air filter replacement material: airx filters 21. 5x23. 5x1 actual: 21. 50 x 23. 50 x 0
BrandAIRX FILTERS WICKED CLEAN AIR. #ad
ManufacturerAIRx #ad
Part Number21.5x23.5x1-ALLERGY

6. Filtrete

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Healthy Living Ultimate Allergen, Filtrete 23.5x23.5x1, AC Furnace Air Filter, MPR 1900, 6-Pack exact dimensions 23.22 x 23.22 x 0.78

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Filtrete #ad - Designed with exclusive filtrete brand 3-in-1 technology from 3M to trap unwanted air particles while letting cleaner air flow through. Home air filters for your furnace, air conditioner or HVAC system. Find your size: 1900 mpr available in 4 in.

4 in. Filters, and at least every 12 months for 4in. 1900 mpr has a rating of MERV 13. And 5in. The higher the mpr, smoke, the more microparticles - such as pollen, pet dander, bacteria and viruses - your filter will capture from the air passing through it. Certified as asthma & allergy friendly As outlined in report ASCR: 1246-01. Thick air filters. A dirty filter will slow down air flow and make the system work harder to keep you warm or cool - wasting energy.

Sign-up for a filter change reminder program that works for you! Filters. Attracts and captures microscopic particles such as smoke, including lint, cough and sneeze debris, bacteria and viruses - and large particles, household dust and pollen. Slim fit and 5 in. Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1 in. For optimal performance of your heating & cooling system or hvac system, change your home air filter at least every 90 days for 1 in.
BrandFiltrete #ad
Manufacturer3M #ad
Height23.19 Inches
Length23.19 Inches
Width0.78 Inches
Part NumberUT40-6PK-1E
ModelUT40-6PK-1E
WarrantyLimited Warranty

7. Enviroflow

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Enviroflow 22X24X1 21.5 x 23.5 Pollen and Dust Control 4 Pack

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Enviroflow #ad - Traps dust and allergens such as pollen, pet dander, mold, and dust mites. Merv 8 rated. Each filter lasts up to 90 days. Electrostatic pleated media, which performs better than regular fiberglass fibers. Nominal size 22 x 24 x 1. Pack of 4 Filters. Actual size 21. 5 x 23. 5 x 075.
BrandEnviroflow #ad
ManufacturerEnviroflow #ad
Height0.75 Inches
Length21.5 Inches
Weight1 Pounds
Width23.5 Inches
Part NumberKF22X24X1
ModelKF22X24X1